224148731 has 4 divisors (see below), whose sum is σ = 233894352. Its totient is φ = 214403112.

The previous prime is 224148671. The next prime is 224148733. The reversal of 224148731 is 137841422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 137841422 = 2 ⋅68920711.

It is a cyclic number.

It is not a de Polignac number, because 224148731 - 2¹⁸ = 223886587 is a prime.

It is a super-2 number, since 2×224148731² = 100485307217820722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (224148733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4872776 + ... + 4872821.

It is an arithmetic number, because the mean of its divisors is an integer number (58473588).

Almost surely, 2^224148731 is an apocalyptic number.

224148731 is a deficient number, since it is larger than the sum of its proper divisors (9745621).

224148731 is an equidigital number, since it uses as much as digits as its factorization.

224148731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9745620.

The product of its digits is 10752, while the sum is 32.

The square root of 224148731 is about 14971.5974765554. The cubic root of 224148731 is about 607.4521797896.

The spelling of 224148731 in words is "two hundred twenty-four million, one hundred forty-eight thousand, seven hundred thirty-one".